posted 01-26-2022 08:15 PM               

Space station cargo spacecraft named for late NASA astronaut Piers Sellers

A British-American climate scientist who launched on three missions to the International Space Station is being honored with the naming of a U.S. commercial spacecraft bound for the orbiting complex that he helped build.

Northrop Grumman has named its next Cygnus capsule the "S.S. Piers Sellers." Set to deliver science equipment and supplies for the space station's Expedition 67 crew in February, the NG-17 spacecraft will lift off atop a Northrop Grumman Antares rocket from the Mid-Atlantic Regional Spaceport at NASA's Wallops Flight Facility on Wallops Island in Virginia.

posted 02-18-2022 10:19 AM               

Northrop Grumman Set to Launch Cargo Resupply Mission and Perform Reboost Service for International Space Station

17th Cygnus, named in honor of astronaut Piers Sellers, will deliver critical supplies to astronauts

Northrop Grumman Corporation is set to launch the company's 17th resupply mission (NG-17) to the International Space Station under NASA's Commercial Resupply Service-2 (CRS-2) contract. In addition to delivering 8,300 pounds of critical cargo to astronauts living aboard the station, the company's Cygnus spacecraft will perform its first operational International Space Station reboost service.

Antares is scheduled to launch Saturday, Feb. 19 at 12:40 p.m. EST from the Mid-Atlantic Regional Spaceport Pad 0A at NASA's Wallops Flight Facility on Wallops Island, Virginia. Cygnus will rendezvous with the station on Feb. 21, where it will remain attached to the station for three months while performing the reboost.

"We are expanding the suite of value-added capabilities that we offer through our proven Cygnus program," said Steve Krein, vice president, civil and commercial space, Northrop Grumman. "The addition of reboost services to Cygnus' capabilities provides NASA with an even greater tool to advance space science and exploration, whether that's on the International Space Station, the moon or beyond."

Reboosting is a critical part of altitude maintenance for the station. Earth's atmosphere causes a slight amount of drag, causing the station's altitude to lower slowly over time. Small, precise nudges are required to place it back into its proper orbit. Northrop Grumman will perform the adjustment service while Cygnus is berthed with the station.

posted 02-19-2022 08:35 AM               

Watch Northrop Grumman's Cygnus spacecraft lift off atop an Antares rocket from NASA's Wallops Flight Facility in Virginia to deliver cargo to the International Space Station.

posted 02-21-2022 06:57 AM               

SS Piers Sellers arrives on station

Northrop Grumman's NG-17 Cygnus spacecraft, the S.S. Piers Sellers, was installed on the Earth facing port of the International Space Station's Unity node at 7:02 a.m. EST (1202 GMT) on Monday (Feb. 21).

Launched on Saturday, the Cygnus was captured by the Canadarm2 at about 4:44 a.m. (0944), with NASA astronauts Raja Chari and Kayla Barron at the robotic arm's controls.

Highlights of space station research facilitated by this mission include:

• a study that examines the effects of a drug on breast and prostate cancer cells

• a new combustion facility

• an investigation from Colgate-Palmolive that will leverage the acceleration of skin aging in microgravity to help create and validate an engineered tissue model to serve as a platform for testing potential products to protect aging skin

• a demonstration of a lithium-ion secondary battery capable of safe, stable operation under extreme temperatures and in a vacuum environment

• new hydrogen sensors that will be tested for the space station's oxygen generation system

• a system that will test hydroponic and aeroponic techniques for plant growth and will allow scientists to observe root growth through video and still images

• a prototype Moon Gallery with 64 works of art.

Findings from these and other investigations aboard the space station will contribute to keeping astronauts healthy during long-duration space travel and demonstrate technologies for future human and robotic exploration missions as part of NASA's Moon and Mars efforts, including lunar missions through the agency's Artemis program.

The S.S. Piers Sellers also delivered critical hardware to be installed during the upcoming ISS Roll-Out Solar Array (IROSA) spacewalks, as well as other components for the successful functioning of astronaut life on the space station, such as a trash deployer and acoustic covers for the waste management system.

This Cygnus mission is the first to feature enhanced capabilities that will allow the spacecraft to perform a reboost, using its engines to adjust the space station's orbit as a standard service for NASA. The agency has one reboost is planned while Cygnus is connected to the orbiting laboratory. A test of the maneuver was performed in 2018 during Cygnus' ninth resupply mission.

The S.S. Piers Sellers will remain at the space station through May. After its release, the Cygnus will deploy several CubeSats and then dispose of several thousand pounds of trash during its destructive re-entry into Earth's atmosphere.